Water-bottle stopper



April 1, 1924.

H. P. KRAFT WATERBOTTLE STOPPER Filed se pt. 27.

I INVENTQR By Attorneys,

Patented Apr. 1, 1924.

UNITED STATES HENRY PHILLIP KRAFT, OF RIDGEWOOD, NEW JERSEY.

WATER-BOTTLE s'rorrnn.

Application filed September 27, 1922. Serial No. 590,972.

To all whom it may concern Be it known that I, HENRY PHILLIP KRAFT, a citizen of the United States of America, residing at ERidgewood, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in ater-Bottle Stoppers, of which the following is a specification.

This invention relates to water bottle stoppers or the like and aims to provide certain improvements therein.

In the usual form of closure for water bottles, ice bags, throat bags, etc., there is provided a socket member usually constructed of sheet metal and having a seat, and a stopper also constructed of sheet metal and provided with a packing adapted to make a leak-tight joint with the seat. In screwing the stopper home into said socket the packing is subjected to severe torsional strains which tend to tear the packing from its mounting. The object of the present invention is to provide a stopper of this gen eral type wherein the packing will not be subjected to torsional strains when the stopper is screwed into the socket. To this end I provide a stopper which preferably comprises a sheet metal cup having a rolled thread, and at the bottom of the cup is formed with a flange to which a member adapted to carry the packing is swivelled. By preference the flange is formed at the end of a reduced extension which is formed at the bottom of the cup without perforating the latter and extends outwardly to provide an exterior annular groove into which a part of the packing-carrying member extends to provide a swivelled mounting for the packing. The invention also includes other features of improvement which will be hereinafter more fully described.

Referring to the drawings wherein I have shown a preferred embodiment of my invention:

Figure 1 is an elevation of a stopper member engaging in the top of a water bag, parts of the water bag being broken away to more clearly disclose the construction of the stopper.

Fig. 2 is an enlarged diametrical section of the stopper member with the top omit ted.

Referring to the drawings let A indicate a hot water bag or the like having a neck portion B and a funnel-shaped mouth C. In the neck B is arranged a socket member D secured therein by vulcanization or any other means, said socket member being formed with a seat E ada ted to receive the packing F of a stopper The stopper G is preferably constructed of sheet metal and comprises a cup-shaped member H having a rolled thread therein for engaging a similarly formed thread in the socket member, a top plate I secured to the cup H and a handle J riveted to said top plate. The construction thus far described is well known and therefore does not constitute a part of the present invention.

- According to the present invention the bottom of the stopper member is modified so as to provide a swivelled mounting for the packing F. This is accomplished by forming the bottom or lower portion of the cup H of the stopper with a reduced imperforate extension K, the lower end of which extends laterally outward to constitute a flange L and provide an exterior annular groove M between said flange and the bottom of the cup H. This groove M serves to support a disc-like member N which is loosely mounted over the bottomof the stopper and provides a swivel connection therewith by having a part of said disc turned or spun inwardly to engage within said groove. The member N is also preferably formed with an annular groove 0- adapted to receive the packing F which may be either removably mounted therein or vulcanized thereto as desired. By preference the swivel relation between the member N and the stopper G is such as to preclude any relative longitudinal movement therebetween, the object being to insure a positive seating of the packing against the seat immediately upon the screwing home of the stopper in the socket member. As herein shown the member N has a portion P adapted to press against the bot-tom of cup H and through which the longitudinal movement of the stopper is transmitted to the packing F.

From the foregoing description it will b seen that all torsional strain on the packing F is eliminated by the present construction. This will be appreciated from the fact that as soon as the packing engages the seat E the frictional engagement therebetween will be sufficient to prevent further rotation of the packing F and its carrying member N and a further turning force applied to the stopper G will only serve to compress the packing against its seat because of the swivel connection between the members H and N. By this construction the swivelling of the washer to the bottom of the stopper is accomplished, without perforating the latter, so that leakage up into the interior of the stopper is avoided. If desired, the lower face of the projection may contact with the upper face of the central part of the member N, so that a limited swivelling area is provided. Ordinarily, however, the parts will swivel when the main bearing is between the upper face of the flange P and the under fac of the stopper.

WVhile I have shown and described the pre- {erred embodiment of my invention it will be understood that I do not wish to be limited to the specific construction set forth, as various changes may be made therein without departing from the spirit of the invention. 7

What I claim is:

1. A stopper for hot water bottles or the like having an imperforate bottom formed with a reduced extension integral with the stopper and a member adapted to carry a packing, swivelled to the extension and having a part adapted to press against the bottom of the extension.

2. A. stopper for hot water bottles or the like, comprising a cup having its bottom formed with an exterior annular groove and a member engaging in said groove swivelled to the cup, said member having a part adapted to press against the bottom of the cup.

3. A stopper for hot water bottles or the like, comprising a cup having a flange at its bottom and a member having an annular groove adapted to receive and hold a packing out of engagement with the cup, 

